Source The product was originally recorded in other records. It is the horn of buffalo, mainly produced in South China and East China (1, 2, 3). Collecting, processing, cutting, soaking in water, taking out, slicing and drying in the sun (1, 2,3). The main components of buffalo horn contain amino acids such as cholesterol, alanine, arginine, aspartic acid, cysteamine, peptides, guanidine derivatives and protein (1, 2,3). Pharmacological action buffalo horn can enhance the contractility of frog heart in vitro; It has obvious sedative effect on rats; It has the functions of relieving convulsion, anti-inflammation, anti-infection, shortening bleeding, reducing capillary permeability and stimulating pituitary-adrenal system (2). The taste is salty and cool. Heart, liver and stomach meridians (2).